Description

J-FET + Tube Preamp Preamplifier PCB Board Fit for 12AX7 / ECC83 Low Distortion Description: 100% Brand New and High Quality It is a focus on "the rich musical charm" pocket preamplifier, circuit junction FET and a tube composed by a special direct coupling approach, because you want a rich musical taste, so the use of this outstanding performance of 2SK117-BL and 12AX7 combinations. In order to improve the resolving power of the sound, in order to obtain a more delicate sound so rich in detail, specifically to enable the first stage in a trickle field pipe work state (approximately 120uA), while the volume potentiometer 250K using high impedance type; and the output stage 12ax7 take a relatively large current (about 2mA) to establish vigorous of the sound. All of these are for one purpose: to obtain a low distortion and delicate and deep rich flavor of the good voice. This is a low noise low distortion JFET-tube hybrid pre-amplifier PCB. The circuit features a low noise low input capacitance J-FET ( 2SK117) input, and followed by 12AX7 as second stage and output. Output Distortion: 0.005% @ 1Vrms, 0.008% 2Vrms, out of the sound is high resolving power, wide sound field, the sound is very magnetic very resistant to listen, I am very satisfied! I personally think this is a low-power, high cost and can be miniaturized outstanding before the class. Operating condition : +250VDC 10mA PCB thickness : 1.6mm Copper thickness : 2 ounce copper ( 70um !) plus gold plated surface for high current. Package Included: 1 x Tube Preamp Bare PCB ( not contain other parts) Payment Delivery details Terms of sales Return Contact us Payment We accept payment by PayPal only. Payment must be received within 7 days after auctions ended. Delivery details Items will be shipped within 1-2 business days when we received payment. Shipping to USA takes about 8-15 days in normal condition,other countries takes about 15-35 days. Please verify your eBay primary shipping address. We are not responsible for any wrong or undeliverable addresses. Terms of sales All items will be checked before packing Your feedback and 5 star ratings are much appreciated. If you are unhappy with your purchase, please contact us on negative / neutral feedback or low star ratings. Return If you receive an item is damaged or defective, we will refund you or replace it with identical one. All damaged or defective items may be exchanged within 30 days. Contact us We take full responsibility if you receive wrong item or damaged item or item not as describled. If you're not satisfied for any reason, please feel free to contact us.Just send us an eBay message.